Sean Walker
Sean Walker is a 29-year-old right-shooting defenseman who could help the Leafs on their top defense pair if they're unable to sign Montour.
He could be a good fit as Morgan Rielly's defense partner. Walker is offensively gifted, but also blocks shots and hits. His takeaways/giveaways ratio was much improved this season, with 41 takeaways compared to 25 giveaways.
Walker registered ten goals and 19 assists for 29 points in 81 games this season, split between the Philadelphia Flyers and Colorado Avalanche.
He also registered 127 blocked shots and 118 hits. Walker averaged over 19 minutes of ice time a game this season. He should be able to handle being on the Leafs top defense pair with no problem. Walker has a career total of 26 goals and 70 assists for 96 points in 313 games over six seasons.
Adding Walker could help the Leafs power play. The Avalanche haven't used him on the power play much, but the Leafs could benefit from having him on theirs.
The Leafs might have or should have, a different-looking power play this season under a new head coach. Depending on the coach and the type of power play he intends to use, Walker could be a good fit.
Walker is coming off a deal with a $2.65 million salary cap hit. He will likely want a raise in what could be his last chance at a big payday. A multi-year deal with a price tag of around $4 million is likely what the Leafs would need to offer.